DE29904032U1 - Heating device for fluids - Google Patents

Heating device for fluids

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Publication number
DE29904032U1
DE29904032U1 DE29904032U DE29904032U DE29904032U1 DE 29904032 U1 DE29904032 U1 DE 29904032U1 DE 29904032 U DE29904032 U DE 29904032U DE 29904032 U DE29904032 U DE 29904032U DE 29904032 U1 DE29904032 U1 DE 29904032U1
Authority
DE
Germany
Prior art keywords
heating device
pipe
heating
tube
tabs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE29904032U
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eichenauer Heizelemente GmbH and Co KG
Original Assignee
Fritz Eichenauer GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fritz Eichenauer GmbH and Co KG filed Critical Fritz Eichenauer GmbH and Co KG
Priority to DE29904032U priority Critical patent/DE29904032U1/en
Publication of DE29904032U1 publication Critical patent/DE29904032U1/en
Priority to DE10006249A priority patent/DE10006249B4/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30—Heating of pipes or pipe systems
    • F16L53/35—Ohmic-resistance heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
    • F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
    • F24H3/081—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/021—Heaters specially adapted for heating liquids
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/022—Heaters specially adapted for heating gaseous material

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Resistance Heating (AREA)
  • Temperature-Responsive Valves (AREA)

Description

PATENTAM\AIALTE · : t. I' "I "I ····· ·· · * ·· ** PATENT NUMBER · : t. I'"I"I ····· ·· · * ·· **

^g HEINER LICHTI^g HEINER LICHTI

DlPL-PHYS. OR. RER. NAT. JOST LEMPERT PO7stFACH^0R7^0SRUHE (DURLACH) DlPL-PHYS. OR. RER. NAT. JOST LEMPERT PO 7 stFACH^0 R 7^0 SRUHE (DURLACH)

DIPL-ING.DIPL-ING.

HARTMUT LASCH TELEFON: (0721)9432815 TELEFAX: (0721)9432850 HARTMUT LASCH PHONE: (0721)9432815 FAX: (0721)9432850

Fritz Eichenauer GmbH & Co. KG
Georg-Todt-StraßeFritz Eichenauer GmbH & Co. KG
Georg-Todt-Strasse

16351.9/99 Le/br D-76870 Kandel 04. März 199916351.9/99 Le/br D-76870 Kandel 04 March 1999

Heizeinrichtung für FluideHeating device for fluids

Die Erfindung betrifft eine Heizeinrichtung für Fluide, insbesondere Gase, mit einem das Fluid führenden Rohr und einer außenseitig an diesem angeordneten Heizeinheit.The invention relates to a heating device for fluids, in particular gases, with a pipe carrying the fluid and a heating unit arranged on the outside thereof.

Es ist bekannt, durch ein Rohr strömende Fluide, insbesondere Gase, mittels in Strömungsraum ragende Heizelemente zu beheizen.It is known to heat fluids, especially gases, flowing through a pipe by means of heating elements protruding into the flow space.

Weiterhin ist eine gattungsgemäße Heizeinrichtung zum Beheizen Entlüftungsluft aus einem Kurbelwellengehäuse bekannt, bei dem an einem einseitig abgeflachten Kupferrohr ein PTC-Element angelötet ist, auf dessen im Kupferrohr abgewandter Seite ein Anschlußkontakt festgelötet ist, während der andere Anschlußkontakt direkt am Kupferrohr angelötet ist; die Anschlußkontakte weisen sich senkrecht vom Rohr parallel zueinander erstreckende freie Anschlußfahnen zur Kontaktierung mit einer Leistungsver-Furthermore, a generic heating device for heating ventilation air from a crankshaft housing is known, in which a PTC element is soldered to a copper tube that is flattened on one side, on the side of which facing away from the copper tube a connection contact is soldered, while the other connection contact is soldered directly to the copper tube; the connection contacts have free connection lugs extending perpendicularly from the tube and parallel to one another for contacting a power supply.

sorgung auf.care.

Die gesamte Einheit kann in Kunststoff eingegossen sein.The entire unit can be encased in plastic.

Nachteilig ist zum einen, daß die Herstellung einer solchen Heizeinrichtung aufwendig ist. Darüber hinaus wird beim Umgießen von Kupferrohr und mit diesem verlöteten keramischen Heizelement durch die Kunststoffummantelung, was bei höheren Temperaturen zu geschehen hat, oft die Verlötung des Heizelements am Kupferrohr beschädigt oder sogar vollständig gelöst bzw. die PTC-Keramik zerstört, da beide verschiedene Ausdehnungskoeffizienten aufweisen, so daß sich ein erheblicher Ausschuß ergibt. Weiterhin treten im Betrieb Spannungen auf, die ebenfalls zum frühzeitigen Ausfall der Heizeinrichtung führen können.One disadvantage is that manufacturing such a heating device is complex. In addition, when the plastic coating is cast around a copper pipe and the ceramic heating element soldered to it, which has to happen at higher temperatures, the soldering of the heating element to the copper pipe is often damaged or even completely detached, or the PTC ceramic is destroyed, as both have different coefficients of expansion, which results in a significant amount of waste. Furthermore, tensions occur during operation, which can also lead to premature failure of the heating device.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Heizeinrichtung der gattungsgemäßen Art zu schaffen, bei der unter Vermeidung der vorgenannten Nachteile eine ausschußfreie, preiswerte Herstellung sowie ein zuverlässiger, sicherer Dauerbetrieb gegeben sind.The invention is therefore based on the object of creating a heating device of the generic type which, while avoiding the aforementioned disadvantages, ensures reject-free, inexpensive production and reliable, safe continuous operation.

Erfindungsgemäß wird die genannte Aufgabe bei einer Heizeinrichtung der eingangs genannten Art dadurch gelöst, daß das Rohr ein Profilrohr, insbesondere ein Strangpreßprofil, mit einer Abflachung und beidseitig der Abflachung angeordneten, aufeinander zugerichteten Laschen ist und daß die Heizeinheit mittels der Laschen am 0 Rohr festgeklemmt ist.According to the invention, the above-mentioned object is achieved in a heating device of the type mentioned at the outset in that the tube is a profile tube, in particular an extruded profile, with a flattened area and tabs arranged on both sides of the flattened area and directed towards one another, and that the heating unit is clamped to the tube by means of the tabs.

Gegenüber dem vorstehend beschriebenen Stand der Technik wird erfindungsgemäß also keine Lötverbindung von Heizelement bzw. Heizeinheit und Fluid führendem Rohr ge-Compared to the prior art described above, the invention therefore does not require a soldered connection between the heating element or heating unit and the fluid-carrying pipe.

schaffen, sondern eine Klemmverbindung in der angegebenen, besonderen Ausgestaltung. Die Heizeinheit besteht dabei aus einem Heizelement, vorzugsweise ein Heizelement in Form eines Kaltleiters, sowie die dieses kontaktierende Anschlußfahne eines Anschlußkontaktes aufnehmenden Gehäuse, das vorzugsweise durch mit seitlichen Ansätzen zwischen den Laschen des Profilrohres und dessen abgeflachter Seite festklemmbar ist, so daß sich zwischen der Heizeinheit und dem Profilrohr eine gute Wärmeverbindung ergibt.create a clamp connection in the specified, special design. The heating unit consists of a heating element, preferably a heating element in the form of a PTC thermistor, as well as the housing that accommodates the connecting lug of a connecting contact that contacts this, which can preferably be clamped by means of lateral projections between the tabs of the profile tube and its flattened side, so that a good thermal connection is created between the heating unit and the profile tube.

In bevorzugter Ausgestaltung kann dabei vorgesehen sein, daß die Laschen parallel zueinander vom Rohr abstehende Stege und aufeinander zugerichtete Schenkel aufweisen, wobei insbesondere das Rohr ein Strangpreßprofil ist. In diesem Falle kann weiterhin vorgesehen sein, daß das Rohr innere Rippen zur Oberflächenvergrößerung aufweist. Vorzugsweise besteht das Material des Fluid führenden Rohres, aus Aluminium oder Aluminium-Legierung und das Material des Gehäuses der Heizeinheit aus Aluminium oder einer Aluminiumlegierung, gut wärmeleitendes Material, wie Kupfer, nicht ausgeschlossen. In weiterer bevorzugter Ausgestaltung ist in an sich bekannter Weise vorgesehen, daß das Rohr und die Heizeinheit durch eine Kunststoffumhüllung umfaßt sind.In a preferred embodiment, it can be provided that the tabs have webs that protrude from the pipe parallel to one another and legs that are directed towards one another, whereby the pipe in particular is an extruded profile. In this case, it can also be provided that the pipe has internal ribs to increase the surface area. The material of the fluid-carrying pipe is preferably made of aluminum or an aluminum alloy and the material of the housing of the heating unit is made of aluminum or an aluminum alloy, with good heat-conducting material, such as copper, not excluded. In a further preferred embodiment, it is provided in a manner known per se that the pipe and the heating unit are enclosed by a plastic sheath.

Weitere bevorzugte Ausgestaltungen der Erfindung sehen vor, daß die Heizeinheit ein Gehäuse aufweist, in dem ein Heizelement angeordnet ist, wobei insbesondere das Heizelement ein Kaltleiter (Heizelement mit positivem Temperaturgradienten; PTC-Element) ist und daß beide Schenkel eines Anschlußkontaktes sich senkrecht vom Rohr forterstrecken. Im letztgenannten Falle ist eine Weiterbildung dadurch gekennzeichnet, daß dem Rohr ein AnschlußkontaktFurther preferred embodiments of the invention provide that the heating unit has a housing in which a heating element is arranged, wherein in particular the heating element is a PTC thermistor (heating element with a positive temperature gradient; PTC element) and that both legs of a connection contact extend vertically from the pipe. In the latter case, a further development is characterized in that the pipe is provided with a connection contact

über ein parallel zum Rohr verlaufenden Schenkel festgecrimpt ist und eine freie Anschlußfahne sich senkrecht vom Rohr forterstreckt.is crimped onto a leg that runs parallel to the pipe and a free connection lug extends vertically from the pipe.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den Ansprüchen, aus der nachfolgenden Beschreibung, in der ein Ausführungsbeispiel der Erfindung unter Bezugnahme auf die Zeichnung im einzelnen erläutert ist. Dabei zeigt:
10Further advantages and features of the invention emerge from the claims and from the following description, in which an embodiment of the invention is explained in detail with reference to the drawing. In this figure:
10

Fig. 1 einen Querschnitt entsprechend I-I der Fig. 2 durch die erfindungsgemäße Heizeinrichtung undFig. 1 shows a cross section corresponding to I-I of Fig. 2 through the heating device according to the invention and

Fig. 2 einen Längsschnitt entsprechend II-IIFig. 2 a longitudinal section according to II-II

der Fig. 1 durch die erfindungsgemäße Heizeinrichtung.of Fig. 1 by the heating device according to the invention.

Die erfindungsgemäße Heizeinrichtung 1 weist zunächst ein Fluid führendes, insbesondere Gas führendes Rohr 2 auf. Dieses ist als Profilrohr ausgebildet, vorzugsweise als Strangpreßprofilrohr aus Aluminium oder Kupfer. Während es über nahezu dreiviertel seines Umfangs einen teilkreisförmigen Querschnitt aufweist, ist es in seinem oberen Bereich mit einer Abflachung 3 versehen. Seitlich der Abflachung 3 sind außenseitig des Rohres 2 aufeinander zugerichtete Laschen 4 ausgebildet. Die Laschen 4 weisen jeweils einen vom eigentlichen Rohr 2 abstehenden, parallel zueinander verlaufenden Steg 6 und jeweils einen aufeinander zugerichteten Schenkel 7 auf.The heating device 1 according to the invention initially has a fluid-carrying, in particular gas-carrying pipe 2. This is designed as a profile pipe, preferably as an extruded profile pipe made of aluminum or copper. While it has a partially circular cross-section over almost three-quarters of its circumference, it is provided with a flattening 3 in its upper region. To the side of the flattening 3, lugs 4 are formed on the outside of the pipe 2, facing each other. The lugs 4 each have a web 6 protruding from the actual pipe 2, running parallel to each other, and each have a leg 7 facing each other.

Unter den Laschen 4, insbesondere zwischen den Schenkeln 7 und der Abflachung 3 sind seitliche Ansätze 8 einer Heizeinheit 9 festgeklemmt, durch welche diese am Rohr 2Beneath the tabs 4, in particular between the legs 7 and the flattening 3, lateral projections 8 of a heating unit 9 are clamped, by means of which the heating unit 9 is attached to the pipe 2

gehalten und gegen die Außenseite der Abflachung 3 gedrückt wird.and pressed against the outside of the flat 3.

Die Heizeinheit 9 weist ein Gehäuse 9a auf, indem ein Heizelement hier in Form eines PTC-Elements 10, und zwar insbesondere klemmend zwischen die Ansätze 8 aufweisenden Rohrs 1 des Gehäuses und einer gegenüberliegenden Deckwand. Unmittelbar auf der Oberseite des PTC-Elements 10 ist eine erste Kontaktlasche 13 festgelegt und auf dieser und der Innenseite der Deckwand eine Isolierlage 15 aufgelegt.The heating unit 9 has a housing 9a in which a heating element in the form of a PTC element 10 is clamped between the tube 1 of the housing, which has projections 8, and an opposite cover wall. A first contact tab 13 is fixed directly on the top of the PTC element 10 and an insulating layer 15 is placed on this and on the inside of the cover wall.

Alternativ könnte die Auswandung aus PTC-Element 10, Kontaktlasche 11 und Zwischenlage 15 und durch seitliche überprüfende Laschen zwischen diesen und der Bodenplatte 11 gehalten sein.Alternatively, the outer wall could be made of PTC element 10, contact tab 11 and intermediate layer 15 and held by lateral checking tabs between these and the base plate 11.

Eine zweite Kontaktfahne 14 ist mit einem unteren abgewinkelten Schenkel 16 an der Außenseite des Rohres 2 im Bereich der flachen Ausbildung 3 festgelegt. Beide Kontaktfahnen 13, 14 weisen senkrecht vom Rohr 2 abstehende Anschlußschenkel auf.A second contact lug 14 is fixed with a lower angled leg 16 on the outside of the tube 2 in the area of the flat formation 3. Both contact lugs 13, 14 have connecting legs that protrude vertically from the tube 2.

Die soweit beschriebene Heizeinrichtung ist vorzugsweise durch eine Kunststoffumhüllung 21 eingefaßt, die einerseits das Rohr 2 umgibt und außenseitig sägezahnförmige Rippen 22 aufweist, auf die Anschlußschläuche gegen Herunterrutschen gesichert aufsteckbar sind. Andererseits weist die Kunststoffumhüllung 21 einen senkrecht vom Rohr 0 abstehenden Hohlansatz 23 auf, in dessen unteren Bereich die abstehenden Fahnen der Anschlußkontakte 13, 14 hineinragen, so daß ein feutigkeitssicherer, elektrischer Kontakt mit einer Leistungsversorgung für das Heizelement 10 herstellbar ist.The heating device described so far is preferably enclosed by a plastic casing 21, which on the one hand surrounds the pipe 2 and has sawtooth-shaped ribs 22 on the outside, onto which connecting hoses can be attached in a way that prevents them from slipping down. On the other hand, the plastic casing 21 has a hollow extension 23 that protrudes vertically from the pipe 0, into the lower area of which the protruding lugs of the connecting contacts 13, 14 project, so that a moisture-proof, electrical contact with a power supply for the heating element 10 can be established.

Claims (1)

SchutzansprücheProtection claims 2.2. 3.3. Heizeinrichtung für Fluide, insbesondere Gase, mit einem das Fluid führenden Rohr und einer außenseitig an diesem angeordneten Heizeinheit, dadurch gekennzeichnet, daß das Rohr (2) ein Profilrohr mit einer Abflachung (3) und beidseitig der Abflachung angeordneten, aufeinander zugerichteten Laschen (4) ist und daß die Heizeinheit (9) mittels der Laschen (4) am Rohr (2) festgeklemmt ist.Heating device for fluids, in particular gases, with a pipe carrying the fluid and a heating unit arranged on the outside of it, characterized in that the pipe (2) is a profile pipe with a flattened area (3) and tabs (4) arranged on both sides of the flattened area and directed towards one another, and that the heating unit (9) is clamped to the pipe (2) by means of the tabs (4). Heizeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Laschen parallel zueinander vom Rohr abstehende Stege (6) und aufeinander zugerichtete Schenkel aufweisen.Heating device according to claim 1, characterized in that the tabs have webs (6) projecting parallel to one another from the tube and legs directed towards one another. Heizeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Rohr (2) ein Strangpreßprofil ist.Heating device according to claim 1, characterized in that the tube (2) is an extruded profile. Heizeinrichtung nach einem der vorangehenden Ansprü-Heating device according to one of the preceding claims ehe, dadurch gekennzeichnet, daß das Rohr (2) innere Rippen zur Oberflächenvergrößerung aufweist.characterized in that the tube (2) has internal ribs to increase the surface area. 5. Heizeinrichtung nach einem der vorangehenden Ansprüehe, dadurch gekennzeichnet, daß das Rohr aus Aluminium oder einer Aluminiumlegierung besteht.5. Heating device according to one of the preceding claims, characterized in that the tube consists of aluminum or an aluminum alloy. 6. Heizeinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Rohr (2) und Heizeinheit (9) durch eine Kunststoffumhüllung (21) umfaßt sind.6. Heating device according to one of the preceding claims, characterized in that the pipe (2) and heating unit (9) are surrounded by a plastic sheath (21). 7. Heizeinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Heizeinheit (9) ein Gehäuse aufweist, in dem ein Heizelement angeordnet ist.7. Heating device according to one of the preceding claims, characterized in that the heating unit (9) has a housing in which a heating element is arranged. 8. Heizeinrichtung nach Anspruch 7, dadurch gekennzeichnet, daß das Heizelement (9) ein Kaltleiter 0 (Heizelement mit positivem Temperaturgradienten; PTC-Element) ist.8. Heating device according to claim 7, characterized in that the heating element (9) is a PTC thermistor 0 (heating element with positive temperature gradient; PTC element). 9. Heizeinrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß beide Schenkel eines Anschlußkontaktes (13) sich senkrecht vom Rohr forterstrecken. 9. Heating device according to claim 7 or 8, characterized in that both legs of a connection contact (13) extend perpendicularly from the pipe. 10. Heizeinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die freien Enden der Anschlußkontakte (13, 14) durch eine hohle Kunststoffumhüllung umfaßt sind.10. Heating device according to one of the preceding claims, characterized in that the free ends of the connection contacts (13, 14) are enclosed by a hollow plastic sheath.
DE29904032U 1999-03-05 1999-03-05 Heating device for fluids Expired - Lifetime DE29904032U1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE29904032U DE29904032U1 (en) 1999-03-05 1999-03-05 Heating device for fluids
DE10006249A DE10006249B4 (en) 1999-03-05 2000-02-11 Heating device for fluids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29904032U DE29904032U1 (en) 1999-03-05 1999-03-05 Heating device for fluids

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DE29904032U1 true DE29904032U1 (en) 1999-05-20

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DE29904032U Expired - Lifetime DE29904032U1 (en) 1999-03-05 1999-03-05 Heating device for fluids
DE10006249A Expired - Fee Related DE10006249B4 (en) 1999-03-05 2000-02-11 Heating device for fluids

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10325965A1 (en) * 2003-06-07 2004-12-30 Mann + Hummel Gmbh Fluid heater especially for gases in motor vehicle combustion engine systems has guide tube with non conductive covering and recesses for heater and contact
EP1772613A1 (en) * 2005-08-11 2007-04-11 Mann+Hummel Gmbh Heating device for intake air
DE102010004985A1 (en) * 2010-01-19 2011-07-21 BorgWarner BERU Systems GmbH, 71636 Intake air heater for diesel engine, comprises duct which is heated by electric heating element, where duct is formed by tube which carries heating element that is formed as positive temperature coefficient element

Citations (6)

* Cited by examiner, † Cited by third party
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DE7817120U1 (en) 1978-06-07 1978-09-21 Siemens Ag, 1000 Berlin Und 8000 Muenchen Electric water heater
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DE3431145A1 (en) 1984-08-24 1986-03-06 Türk & Hillinger GmbH, 7200 Tuttlingen Electric heating device for the boiler of an absorber cooling system or of a heat pump
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